very poor idle

[dusty400]

I got a 94 k1500 5.7 it idles so bad and low that it will shut off after 10 minutes or less. But it drives perfect. I put a new Taylor cap rotor coil and street thunder wires on also new CTS tps and map sensor. The honey comb in the cat is knocked out. Also unplugged the 02 sensor still idles like crap. No check engine light comes on. No vaccum leaks has egr delete on it all lines plugged. Going to try new plugs tomorrow. Anyone have any idea's. Thanks in advance

 

[michael hurd]

Double check that the firing order is correct, and from there I would check the injector spray pattern. You can do this with a timing light, but instead of putting the inductive pickup on #1, put it on the coil wire, it will flash 8x faster.

Did this start before installing those parts?

 

[dusty400]

I checked fireing order 5 times. It did it before new parts as well. I'll try the timing light this weekend